Fireproof cabinet.



R. FRIEDRICH.

FIREPROOF CABINET.

APPLICATION FILED JAN-6.1914.

1,140,670. Patented May 25, 1915.

ROBERT FRIEDRICH, OF LEIPZIG-IPLAGWITZ, GERMANY.

FIREPROOF CABINET.

Specification of Letters Patent.

Patented May 25,1915.

Application filed January 6, 1914. Serial No. 810,556.

To all whom it may concern:

Be it known that I, ROBERT FRIEDRICH, a citizen of the German Empire, residing at Leipzig-Plagwitz, in Germany, have invented a certain new and useful Improvement in Fireproof Cabinets, of which the'following is a specification.

The object of this invention is to provide a cabinet which is fire-proof though constructed in the main of wood. To this end I cover the wooden structure inside and out with fireproof coatings or protective layers consisting of thin artificial stone slabs produced by immersing textile fabric in liquid cement and allowing the cement to dry on the fabric and incrust the same.

The invention is illustrated in the accompanying drawing, in which- Figure l is a front elevation, partly in section, and Fig. 2 a cross section. Fig. 3 shows another form of construction.

Referring in the first instance to Figs. 1 and 2, the frame a of the cabinet is made of well-seasoned boards, slats and the like, and is covered inside and outside with layers 6, each consisting of textile fabric which has been immersed in Sorel cement and is applied in a wet state. The cement binds firmly with the wood and imparts additional rigidity to the structure as well as rendering same fire-proof. The outer surfaces of the layers 1) are pressed and smoothed with c'onies of this patent may be obtained for suitable implements before the cement sets. Coloring matter may be added to the cement for the purpose of imitating various materials. The protective coating described can also be applied to existing cabinets.

In the modification shown in Fig. 3, the cabinet is double-walled, each wall consisting of a layer of wood a and two protective layers 6 12 The cavity between the walls may be filled with ash or the like, or I may suspend therein curtains combined with electric contacts, whereby electric alarm circuits are closed if the curtains are disturbed by an attempt to break into the cabinet. Cabinets thus protected are well adapted for the storage of valuables and secret documents in public and private offices.

What I claim as my invention and desire to secure by Letters Patent of the United States is In a cabinet the combination of wooden vwalls and fire-proof coatings applied internesses.

ROBERT FRIEDRICH. Witnesses:

Monrrz SPREER, RUDULPH FRIOKE.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. Y 

